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Spironolactone

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CAS:52-01-7
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Products Intro: Product Name:17-Hydroxy-7-alpha-mercapto-3-oxo-17-alpha-pregn-4-ene-21-carboxylic acid-gamma-lactone-7-acetate
CAS:52-01-7
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CAS: 52-01-7
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  • Spironolactone
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Spironolactone Basic information
Diuretics Indications Uses Category Toxicity grading Acute toxicity Flammability and hazardous characteristics Storage characteristics Extinguishing agent
Product Name:Spironolactone
Synonyms:,(7alpha,17alpha)-;17alpha-Pregn-4-ene-21-carboxylic acid, 17-hydroxy-7alpha-mercapto-3-oxo-, gamma-lactone, acetate;17-alpha-Pregn-4-ene-21-carboxylic acid, 1-hydroxy-7-alpha-mercapto-3-oxo-alpha-lactone;17-alpha-pregn-4-ene-21-carboxylicacid,1-hydroxy-7-alpha-mercapto-3-oxo-alpha;17-Hydroxy-7alpha-mercapto-3-oxo-17alpha-pregn-4-ene-21-carboxylic acid gamma-lactone acetate;17-hydroxy-7-alpha-mercapto-3-oxo-17-alpha-pregn-4-ene-21-carboxylicaciga;17-hydroxy-7alpha-mercapto-3-oxo-17alpha-pregn-4-ene-21-carboxylicacigamm;3-(3-keto-7-alpha-acetylthio-17-beta-hydroxy-4-androsten-17-alpha-yl)propion
CAS:52-01-7
MF:C24H32O4S
MW:416.57
EINECS:200-133-6
Product Categories:Active Pharmaceutical Ingredients;Biochemistry;Steroids;Steroids (Others);API's;Intermediates & Fine Chemicals;Pharmaceuticals;ALDACTONE
Mol File:52-01-7.mol
Spironolactone Structure
Spironolactone Chemical Properties
Melting point 207-208 °C(lit.)
alpha -37 º (c=1, CHCl3)
Boiling point 504.87°C (rough estimate)
density 1.1061 (rough estimate)
refractive index -36 ° (C=1, CHCl3)
storage temp. Store at RT
solubility Practically insoluble in water, soluble in ethanol (96 per cent).
form Powder
color White to yellow-white
Water Solubility practically insoluble
Merck 14,8760
CAS DataBase Reference52-01-7(CAS DataBase Reference)
NIST Chemistry ReferenceSpironolactone(52-01-7)
IARC3 (Vol. Sup 7, 79) 2001
EPA Substance Registry SystemSpironolactone (52-01-7)
Safety Information
Hazard Codes T,Xn,Xi
Risk Statements 60-40-36/37/38
Safety Statements 53-22-36/37/39-45-36-26
WGK Germany 3
RTECS TU4725000
TSCA Yes
HS Code 29321900
Hazardous Substances Data52-01-7(Hazardous Substances Data)
ToxicityLD50 in rats, mice, rabbits (mg/kg): 790, 360, 870 i.p. (IARC, 1980)
Spironolactone Usage And Synthesis
DiureticsSpironolactone is a kind of weak potassium-sparing diuretics, and is fine white or white-like crystalline powder with slightly bitter taste. It is odorless or with slight mercaptan odor. It is highly soluble in chloroform but insoluble in water and soluble in ethanol, and easily soluble in benzene or ethyl acetate. It has a similar chemical structure as aldosterone and can compete with aldosterone for the aldosterone receptors in the cytoplasm of the distal convoluted tubule and collecting tube duct cells, affecting the binding of the aldosterone to its receptor, thus preventing the synthesis of aldosterone-induced protein and further inhibiting the exchange between K+ and Na+ with reduced potassium excretion and plays potassium-sparing diuretic effect. The strength of the diuretic effect of spironolactone is related to the in vivo secretion of aldosterone with increased secretion also causing stronger effect while lower secretion causing weaker effects. It has no diuretic effect on patients without aldosterone secretion. Because the drug only acts on the distal convoluted tubule and collecting duct while having no effect on the other segments of tubular, it only has a weak diuretic effect with slow onset but long duration time. It is mainly used for treating refractory edema accompanied with higher amount of aldosterone such as cirrhosis, congestive heart failure, and nephrotic syndrome with excellent efficacy in treating the patients with hyperaldosteronism caused by the lack of sodium in the congestive heart failure. Single drug administration usually only give a poor diuretic and therefore, it is often used in combination with hydrochlorothiazide or dihydrochlorothiazide for enhancing the effect. In addition, it can also be applied to the treatment of primary hyperaldosteronism and hypertension. Patients of hyperkalemia or renal failure should be disabled.
This product has a rapid and irregular absorption rate after oral administration with the absorption rate being relate to the spironolactone particle size. According to general process, the bioavailability is only about 5% while the absorption rate can reach 90% when made into fine particles with the time for the plasma concentration reaching the peak with approximately 3 hours. It has rapid metabolism rate in vivo with its major metabolites being canrenone which can exert the pharmacological activity and other metabolites also being gradually converted into canrenone. The serum metabolites level will reach peak at 2 to 4 hours after single dose of oral administration. The concentration of metabolites will decrease rapidly within 12 hours with slow decline in 12 to 96 hours. After oral administration of multiple doses, the half life of the canrenone metabolite was 13 to 24 hours. The half-life of spironolactone is only about 10 minutes. The plasma protein binding rate of canrenone is about 98%. Its metabolites can be secreted through the bile and urine. The canrenone metabolism includes enterohepatic circulation. It can penetrate through the placental barrier and enter into breast milk. It also has effects of inhibiting estrogen and androgen synthesis.
IndicationsSpironolactone is a kind of competitive aldosterone inhibitors with the drug itself being not active. Its diuretic effect is through its competitive antagonism against endogenous aldosterone, belonging to potassium-sparing diuretics.
1. edema disease, being used in combination other diuretics for the treatment of congestive heart failure, liver cirrhosis, renal edema, edema disease; the purpose in to correct the increased secondary aldosterone secretion associated with those above diseases and fight against the potassium excretion of other diuretics; it can also used in the treatment of idiopathic edema.
2. Hypertension, as the auxiliary treatment drug of high blood pressure.
3. For primary hyperaldosteronism, spironolactone can be used to diagnose and treat the disease.
4. For the prevention of hypokalemia; being used in combination with thiazide diuretics to enhance the diuretic effect and prevent hypokalemia.
The above information is edited by the Chemicalbook of Dai Xiongfeng.
UsesIt can be used as a kind of inefficient diuretic drugs.
It is a synthetic 17-lactone steroid which is a kind of renal competitive aldosterone antagonist in a class of pharmaceuticals called potassium-sparing diuretics, used primarily to treat ascites in patients with liver disease, low-renin hypertension and hypokalemia.
The active metabolite of lactone (spironolactone); It can be used for the Inhibition of aldosterone biosynthesis. It can also be used as the blocker of the Quabain effect.
Categorytoxic substances
Toxicity gradinghighly toxic
Acute toxicityintraperitoneal-rat LD50: 277 mg/kg; intraperitoneal port-Mouse LD50: 260 mg/kg
Flammability and hazardous characteristicseasily flammable with combustion generating toxic fumes of sulfur oxides
Storage characteristicsTreasury: ventilation, low-temperature and dry; store it separately from food raw materials
Extinguishing agentDry powder foam, sand, carbon dioxide, spray water
Chemical PropertiesWhite to Off White Solid
OriginatorAldactone,Searle,US,1959
UsesSpironolactone, an aldosterone-, and competitive androgen-receptor-antagonist and 5-alpharductase- inhibitor, indicated for the treatment of androgen dependent hirsutism, ideally in doses of 50 to 200 mg per day accompanying the intake of oral contraceptives with the same seven day break in between. Side effects concerning the length of the menstrual cycle, the increase of blood pressure or potassium levels may occur. Spironolactone is the number one drug in the treatment of hirsutism in the US (Farquhar et al., 2003). In other countries the prescription of spironolactone for the treatment of hirsutism may be off-label.
UsesIt is a synthetic 17-lactone steroid which is a renal competitive aldosterone antagonist in a class of pharmaceuticals called potassium-sparing diuretics, used primarily to treat ascites in patients with liver disease, low-renin hypertension, hypokalemia
Usesdiuretic, aldosterone antagonist
DefinitionChEBI: A steroid lactone that is 17alpha-pregn-4-ene-21,17-carbolactone substituted by an oxo group at position 3 and an alpha-acetylsulfanyl group at position 7.
IndicationsSpironolactone (Aldactone) is a compound originally developed as a mineralocorticoid antagonist and is used as a diuretic and antihypertensive agent. However, at high doses spironolactone binds to the androgen receptor. In clinical practice it is a weak androgen antagonist used to treat hirsutism in women by blocking testosterone binding to androgen receptors in hair follicles. Use of spironolactone in women for the treatment of hirsutism or male pattern baldness can result in elevated serum potassium levels; these levels should be checked within 1 month of starting the medication.
Manufacturing ProcessA mixture of approximately 11 parts of 17α-(2-carboxyethyl)-17β- hydroxyandrosta-4,6-dien-3-one lactone and 10 parts of thioacetic acid is heated at 85° to 95°C for ? hour. Excess thioacetic acid is removed by vacuum distillation at this point, and the residue is twice recrystallized from methanol, affording 7α-acetylthio-17α-(2-carboxyethyl)-17β-hydroxyandrost- 4-en-3-one lactone, melting at approximately 134° to 135°C. Heated above this melting point, the product solidifies and melts again at approximately 201° to 202°C (with decomposition).
Brand nameAldactone (Searle);Airolactone;Aldactide 25;Aldactone-a;Aldazida;Aldonorm;Aldospirone;Alpamed;Altexide;Aporasnon;Carditan;Crk 635;Ct-spiro;Digi-aldopur;Dilakton;Hexalacton;Hokulaton;Hokuraton;Hydrospiron;Idrolattone;Lacilactone;Laralmin;Lasitone;Loractone;Mf 218d;Noidouble;Novospiroton;Novospirozine;Novosprioton;Novospriozine;Penantin;Pirolacton;Pirolcaton;Plarenil;Practon 50;Raudazida;Risicordin;Rolactone microfine;Sali-spiroctan;Sas 1060;Servilactone;Spiractin;Spiridazide;Spirix;Spiro comp;Spiro50-d;Spirodigital;Spiro-f;Spironomocompren;Spironone;Spironothiazide;Spiropal;Spirostada;Spirotone;Suprapuren;Synureticum;Tensoflex;Urosonine;Xenalone;Xeualon.
Therapeutic FunctionDiuretic
World Health Organization (WHO)Spironolactone, an aldosterone antagonist, has been widely used for over 25 years in the treatment of hypertension and in the management of refractive oedema. Evidence that long-term administration of high doses are tumorigenic in the rat has recently led to restriction of its use by some national regulatory authorities although the significance of this finding with respect to clinical use is not certain. In 1987 spironolactone was transferred from the main list to the complementary list of the WHO Model List of Essential Drugs. (See also WHO comments for canrenone and potassium canrenoate). (Reference: (WHODI) WHO Drug Information, 2(1), , 1988)
Biological FunctionsSpironolactone (Aldactone) is structurally related to aldosterone and acts as a competitive inhibitor to prevent the binding of aldosterone to its specific cellular binding protein. Spironolactone thus blocks the hormone-induced stimulation of protein synthesis necessary for Na+ reabsorption and K+ secretion. Spironolactone, in the presence of circulating aldosterone, promotes a modest increase in Na+ excretion associated with a decrease in K+ elimination. The observations that spironolactone is ineffective in adrenalectomized patients and that the actions of spironolactone can be reversed by raising circulating al-dosterone blood levels (surmountable antagonism) support the conclusion that spironolactone acts by competitive inhibition of the binding of aldosterone with receptor sites in the target tissue. Spironolactone acts only when mineralocorticoids are present.
General DescriptionSpironolactone, 7α-(acetylthio)-17α-hydroxy-3-oxopregn-4-ene-3-one-21-carboxylic acidγ-lactone (Aldactone) is an aldosterone antagonist of greatmedical importance because of its diuretic activity.
HazardQuestionable carcinogen.
Biological ActivityCompetitive mineralocorticoid (aldosterone) receptor antagonist that exhibits antihypertensive activity in vivo . Also displays antiandrogen activity and inhibits steroid hormone biosynthesis.
PharmacologySpironolactone (Aldactone) is the only diuretic that has been shown in a double-blind multicenter prospective clinical trial to improve survival in CHF. The addition of spironolactone to digitalis and an angiotensinconverting enzyme (ACE) inhibitor significantly improved survival among patients with chronic severe heart failure.
Spironolactone competitively inhibits the binding of aldosterone to cytosolic mineralocorticoid receptors in the epithelial cells in the late distal tubule and collecting duct of the kidney. Aldosterone enhances salt and water retention at the expense of enhanced renal K and H excretion. Spironolactone enhances diuresis by blocking sodium and water retention while retaining potassium. An obvious potential side effect is hyperkalemia, which is aggravated by the potassium-retaining properties of the ACE inhibitors. The likely concomitant use of the loop diuretic furosemide, which depletes K , dictates careful monitoring of serum potassium to avoid life-threatening rhythm disturbances.
There is also evidence for the existence of mineralocorticoid receptors on cardiac myocytes. This raises the intriguing possibility that spironolactone could mediate important direct effects on the myocardium in CHF.
Clinical UseSpironolactone has been used clinically in the following conditions:
1. Primary hyperaldosteronism. Used as an aid in preparing patients with adrenal cortical tumors for surgery.
2. Hypokalemia. Used in patients with low serum K+ resulting from diuretic therapy with other agents. Its use should be restricted to patients who are unable to supplement their dietary K+ intake or adequately restrict their salt intake or who cannot tolerate orally available KCl preparations.
3. Hypertension and congestive heart failure. Although spironolactone may be useful in combination with thiazides, the latter remain the drugs of first choice. Fixed-dose combinations of spironolactone and a particular thiazide (e.g., Aldactazide) generally offer no therapeutic advantage over either component given separately and tend to restrict the ability of the clinician to determine the optimal dosage of each drug for a particular patient.
4. Cirrhosis and nephrotic syndrome. Spironolactone is a mild diuretic and may be useful in treating the edema that occurs in these two clinical conditions, that is, when excessive K+ loss is to be avoided.
Side effectsSerum electrolyte balance should be monitored periodically, since potentially fatal hyperkalemia may occur,especially in patients with impaired renal function or excessive K+ intake (including the K+ salts of coadministered drugs, e.g., potassium penicillin). Spironolactone can induce hyponatremia and in cirrhotic patients, metabolic acidosis.A variety of gastrointestinal disturbances may accompany spironolactone administration. These include diarrhea, gastritis, gastric bleeding, and peptic ulcers. Spironolactone is contraindicated in patients with peptic ulcers. Spironolactone may also cause elevated blood urea nitrogen, drowsiness, lethargy, ataxia, confusion, and headache. Gynecomastia and menstrual irregularity in males and females, respectively, can occur. Painful gynecomastia (directly related to dosage level and duration of therapy), which is generally reversible, may necessitate termination of therapy. Animal studies demonstrating tumorigenic potential support the clinical judgment that spironolactone alone or in combination should not be used for most patients who require diuretic therapy and its unnecessary use should be avoided.
Safety ProfilePoison by intraperitoneal route. Human reproductive effects by ingestion and possibly other routes: men, impotence and breast development; women, menstrual cycle changes or disorders, changes in the breasts and lactation. An experimental teratogen. Other experimental reproductive effects. Other human systemic effects by ingestion: agranulocytosis, kidney tubule damage, increased urine volume, and changes in blood sodium and calcium levels. Questionable carcinogen. When heated to decomposition it emits toxic fumes of SOx,. Used to treat hypertension, edema of congestive heart failure, cirrhosis, and kidney failure. 0
Veterinary Drugs and TreatmentsSpironolactone may be used in patients with congestive heart failure who do not adequately respond to furosemide and ACE inhibitors, who develop hypokalemia on other diuretics, and are unwilling or unable to supplement with exogenous potassium sources. It may also be effective in treating ascites as it has less potential to increase ammonia levels than other diuretics.
MetabolismSpironolactone is poorly absorbed after oral administration and has a delayed onset of action; it may take several days until a peak effect is produced. It has a somewhat slower onset of action than triamterene and amiloride (discussed later), but its natriuretic effect is modestly more pronounced, especially during long-term therapy. Spironolactone is rapidly and extensively metabolized, largely to the active metabolite canrenone. Canrenone and potassium canrenoate, its K+ salt, are available for clinical use in some countries outside the United States. Canrenone has a half-life of approximately 10 to 35 hours.The metabolites of spironolactone are excreted in both the urine and feces. New selective aldosterone receptor antagonists (SARA), such as eplerenone, have been developed but have not yet been introduced into clinical practice. Eplerenone and canrenone exhibit fewer steroidlike side effects (gynecomastia, hirsutism).
Structure and conformationSynthetic steroid that resembles aldosterone.
Spironolactone Preparation Products And Raw materials
Raw materialsSaponin-->Androstenedione
Tag:Spironolactone(52-01-7) Related Product Information
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